What is the specialized kidney shaped cells that open and close the stomata

Some of the members of the protist kingdom have to take in food from their environment in order to survive as members of the animal kingdom. why are these organisms classified as protists and not as animals?

In order to determine the shape of human muscle cells, a scientist should?

The force of gravity pulls all objects downwards. Which of these statements is correct about this law of science? A. It is not supported by observations B. It can be contradicted by data C.

When THC binds to its receptor, how are the levels of cAMP affected in the post synaptic cells?

What kind of ecosystem is the thorn scrub A. wetland B. grassland c. badland d. shrubland

Which area of the stomach directly adjoins the small intestine?

Athletes foot is caused by

Compare the characteristics of rivers and streams.

How does an f + cell differ from an hfr cell? how does an f + cell differ from an hfr cell? hfr strains have the f plasmid integrated into the chromosome. f + cells have no plasmids. hfr cells cannot perform conjugation.

How can the environment be organized into levels from simple to complex?